Add set -ex to provisioning scripts for RHEL 6.6

Change-Id: I6e6e66cffcbd84af1e093176d65751063492122b
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/05-subscription-manager-tooling.sh

@@ -2,5 +2,8 @@
 # version: provided by RedHat
 # needed for yum to work properly in case there is incorrect data in
 # the sslclientkey repository parameter value
+
+set -ex
+
 sudo rm -f /etc/pki/entitlement/*
 sudo subscription-manager refresh

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/06-odbc.sh

 # provides: odbc devel packages on RHEL
 # version: provided by default Linux distribution repository
 # needed for configure -plugin-sql-odbc in qtbase
+
+set -ex
+
 sudo yum install -y unixODBC-devel

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/08-libclang.sh

 #!/usr/bin/env bash
 
+set -ex
+
 BASEDIR=$(dirname "$0")
 . $BASEDIR/../common/sw_versions.txt
 VERSION=$libclang_version

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/08-pythondev.sh

 # provides: python development libraries
 # version: provided by default Linux distribution repository
 # needed to build pyside
+
+set -ex
+
 sudo yum install -y python-devel python-virtualenv
 
 # install the EPEL repository which provides python3

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/09-cmake.sh

+set -ex
+
 $(dirname $0)/../common/cmake_linux.sh

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/libusb.sh

 #!/bin/env bash
 # Required for tqtc-boot2qt/qdb
+
+set -ex
+
 sudo yum install -y libusb1-devel

coin/provisioning/qtci-linux-RHEL-6.6-x86_64/version.sh

@@ -36,6 +36,9 @@
 # This script needs to be called last during provisioning so that the software information will show up last in provision log.
 
 # Storage installed RPM packages information
+
+set -ex
+
 echo "*********************************************" >> ~/versions.txt
 echo "***** All installed RPM packages *****" >> ~/versions.txt
 rpm -q -a | sort >> ~/versions.txt